We couldn't find a picture of Ellerton's home, but we like to think of it looking something like this Scottish stone barn. Imagine hauling those rocks home on your head. TIM GRAHAM/GETTY IMAGES

Simeon Ellerton spent years building a house out of stones he found and carried home, one by one. Rejected by his one true love, Edward Leeskalnin spent decades erecting a bizarre monument for her, built of giant coral stones in Florida. But what exactly motivated these guys? How did they stick with their strange obsessions, and what mysteries surround them in the modern day? Tune in to learn more.